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| 低温弱光对西葫芦幼苗渗透调节物质的影响 | |
| 引用本文： | 侯永平,陈年来,康恩祥,张玉鑫.低温弱光对西葫芦幼苗渗透调节物质的影响[J].中国瓜菜,2009,22(1). |
| 作者姓名： | 侯永平 陈年来 康恩祥 张玉鑫 |
| 作者单位： | 1. 甘肃农业大学农学院,兰州,730070 2. 甘肃省农业科学院旱地农业研究所,兰州,730070 3. 甘肃省农业科学院蔬菜研究所,兰州,730070 |
| 摘 要： | 以西葫芦品种早青一代为试材,研究了不同低温弱光组合及低温弱光持续时间对西葫芦幼苗渗透调节物质的影响。结果表明:可溶性蛋白质含量随低温弱光逆境程度加剧和持续时间延长持续减少;在15℃/5℃以上,弱光处理渗透调节物质游离脯氨酸、可溶性糖含量增加,但增加幅度随着弱光逆境加剧和持续时间延长而减弱;但在15℃/5℃下,弱光逆境导致游离脯氨酸、可溶性糖含量先增加后降低。 |
| 关 键 词： | 西葫芦 低温 弱光 渗透调节 游离脯氨酸 可溶性糖 可溶性蛋白质 |
Effects of low temperature and low light stress on osmotic adjustment of squash seedlings |
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| HOU Yong-ping,CHEN Nian-lai,KANG En-xiang,ZHANG Yu-xin.Effects of low temperature and low light stress on osmotic adjustment of squash seedlings[J].China Cucurbits And Vegetables,2009,22(1). | |
| Authors: | HOU Yong-ping CHEN Nian-lai KANG En-xiang ZHANG Yu-xin |
| Abstract: | Squash(Cucurbita pepo L.) seedlings were exposed to different low temperature-light regimes to investigate the responses of osmotic adjustment. The results indicated that the contents of proline and soluble sugar increased contin- uously and the content of soluble protein decreased as the stress degree increased or the time prolonged at 15 ℃/5 ℃ above temperature and any low light condition. However,the contents of proline and soluble sugar increased first and then decreased at 15 ℃/5 ℃ below temperature and any low lights. |
| Keywords: | Cucurbita pepo L Low temperature Poor light Osmotic adjustment Proline Soluble sugar Soluble protein |
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